好一陣子沒有凝視這麼久的星空了（換言之很久沒熬夜觀星了）。
11/10 傍晚看天色大好立刻決定要上山。
夜很美，夜空澄澈，星子彷彿低到伸手可摘，冬季銀河肉眼可見。雖然凌晨後開始感受到冬天的威力（最低六度，應該要帶暖暖包），不過還是趁著這一兩個月來難得的清澈夜空享受星夜到曙光來臨。
從單張曝光40到60秒的星景中即可隱約見玫瑰、靈魂與心星雲可見今晚透明度很不錯。
天空透明度很好在素描時也可以感覺出來，因此除了既定的星團素描外，因為波江座正升到適合觀測的位置，於是試著把望遠鏡轉過去觀看之前漏掉的天爐與波江座交界處的那群星系，果然，今晚雖然只是使用十公分鏡也能看到好幾個波江星系（相信這幾個星系用8"鏡應該很容易），即使它們只在南方仰角約三十度左右的高度。除了星團星系外，還畫了兩個之前無法看到的星雲IC405與410，總共昨晚素描了十六個天體。
It's been a while since I stared at the starry sky for so long.
When I saw the amazing sky on the Wednesday evening, I immediately decided to go up the mountain.
The starry night was beautiful, the sky was clear, the stars seemed to be so low that they could be picked up, and the winter Milky Way was visible to the naked eye. Although I started to feel the power of winter in the early morning (feel so cold), but still took advantage of the rare clear night sky in the past two months to enjoy the starry night until dawn.
The sky transparency was very good and can be felt when sketching, in addition to the established star cluster sketches, because the Eridanus was rising to a suitable position for observationTherefore, therefore I tried to turn the telescope to look at the galaxies I missed before, they are at the junction of the Eridanus and Fornax . Sure enough, even if I only used a ten-centimeter mirror tonight, I still could see several galaxies (I believe it should be easy to use an 8" mirror to see these galaxies), even if they were in the south sky , only with an elevation angle of about 30 degrees height above city. In addition to star clusters and galaxies,I also sketched two faint nebula IC405 and 410 that I couldn’t see in the past. i had sketched 16 celestial bodies in total , another fulfilling night.
Pentax K3II, ASTROTRACER 40sec
銀河肉眼可見
NGC6996, 6997
NGC1502
仙女座星系隨著銀河西傾
IC410
鞍部南天的光害在午夜後因城市作息會明顯降低，光暈中心在正南偏西一點，影響比較大的範圍在仰角三十度以下，所以若仰角在三十度以下的天體在過中天前觀測會比過中天後優。
平常當透明度好的時候，樹梢的星星（約仰角十二至十三度）也可以清晰看見，這時候南方低仰角的SQM可以達到19以上，四十五度可以到19.5以上，越北越暗，狀況好的時候從天頂到北天則可以達到至20至20.4間。800m以下若有很厚的雲海時則可以到21（十年碰過一次）。
NGC2264
good morning
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補上這張是之前沒有貼上的
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